Rotary buffing-roll



2 Sheets Sheet 2.

(No Model.)

P. B. BA(}LEY. ROTARY .BUPPING ROLL.

vNo. 603,357. Patented May 3,1898.

M WM mu: mams PErzRs co'.. mom-umm wAsnNmo UNITED STATES PATENT OFFICE.

PRESTON BROOKS BAGLEY, OF PEABODY, MASSACHUSETTS.

RoTARY BuF-'No-RoL..

sPEcIFcnrIoN forming part ofl Letters Patent No. 603,357, dated May 3, 1398. .Application filerl July 26, 1897. Serial No. 645,912. (No model.)

To all whom, it may concern.-

Be it known that I, PREsroN BRooKs BAG- LEY,`a citizen of the United States, and a resit dent of Peabody, in the countyof Essex and ering inserted in the slit of the 'roll previous to securing such abrasive covering to the roll. Fig. represents a similar cross-section showing the abrasive covering secured to and firmly held in position on the roll. Fig. 6

. represents a similar cross-section showing the crimped or creased edges of the abrasive covering in the act of being expelled from the slit of the roll. Fig. 7 represents a detail plan view of the abrasive covering shown as detached from the roll, and Fig. S represents a cross-section on the line 8 8shown in Fig. 7.

Similar letters refer to similar parts wher-j ever they occur on the different parts of the drawings..

In the drawings, A represents the metal body of the roll, which may be taperingoor cylindrical,according to the purpose for which it is to be used.

B represents the rotary shaft ofthe buffingmachine, to which the roll-body is secured, preferably by means of a screw-threaded end b on the shaft B, which is screwed into a central screw-threaded perforation in one end of the roll-body, as is usual in devices of this kind.

The periphery of the metal body of the roll is screwthreaded or grooved laterally, as shown atA' in Fig. 3, for the purpose of more firmly securing to it the annular elastic cushion or coating O, which is preferablymade of india-rubber, molded around said metal body, and thus caused to. adhere and cling' firmly to the latter. Through such annular rubber glass paper or cloth or emery cloth or`paper and is provided with creased or crimped lips e e, by means of which and asuitable lockin g device the said abrasive covering is secured to the roll. The said locking device consists of a longitudinal spindle F, which is journaled in a longitudinal cylindrcal perforation a, in the roll-body A, said spindle being prevented from longitudinal motion in its bearings, preferably by having a collar f in one end and a nut f' in `its opposite end, as shown in Fig. 3.

In practice I prefer to make on the outer end of the spindle F a square or polygonal head f", by means of which and a wrench or suitable tool the said spindle may be turned to secure the abrasive covering to the roll or expel it therefrom, as may be desired, from time to time.

The locking-spindle F is semicircular segmental, or nearly so, in section, asshown in Figs. 4, 5, and 6, and has one of its edges F' made rounded or cam-shaped for the purpose of turning the edges e e of the abrasive covering E during the locking operation without breaking or disintegrating it, as shown in Fig. 5. The other edge F of said lockingspindle is made sharp, as shown in Figs. 4, 5, and 6, and serves as a means for expelling the lips ere of the abrasive covering when it is desired to remove the latter from the roll after the abrasive covering is worn out, as shown in Fig. 6.

To secure the abrasive covering E to the roll, it is wrapped around it and the lips or edges e e inserted through the slit D, and during such insertion of said lips the lockingspindle F is held in the position shown in Fig.l 4. After the creased or crimped edges e e of the abrasive covering have been inserted through the slit D into the cylindrcal ,cavity a the spindle F is turned in the direction of the arrow shown in Fig. 4 to the position shown in Fig.l 5, causing the camshaped or curved edge F' of the segmental IOO spindle F to turn the lower portions of the lips e e of the abrasive covering against the interior of tle cylindrical eavity a and causing said lips to be firmlysecured between the interior of said cavity and the rounded or circular portion of said spindle, thus causing the abrasive covering E to be smoothly and firmly held against the cireumference of the annular rubber cushion or covering C, as shown in Fig. 5.

Then the abrasive covering is worn out and it is desired to renove it, so as to replace it with a fresh one, it is only necessary to turn the spindle F in the direction shown by arrow in Fig. 6, causing the lips e c of the abrasive covering to be automatically expelled through the slit D, thus facilitating the removal of the abrasive covering when so desired.

The invention is very simple in construction, is easily operated foi` securin g an abrasive covering to a roll, as well as for removing it, and serves to produce a snooth and continuous abrasive surface void of overlapping parts.

That I wish to secure by Letters Patent and clain is-- In a buffing-roll in combination a metal body, an annular rubber cushion or cover secured to the former, said body and rubber covering being lon gitudinally slitted,an abrasive covering having crinped or creased lips or edges adapted to be inserted through said slit, and a segmental locking-spindle journaled in a longitudinal cavity a, in said rollbody and having one of its edges F' made rounded or eam-shaped for guiding the edges of the abrasive covering into locking position within the cavity a, and having its opposite edge F made pointed for expelling` the lips of the abrasive covering substantially as and for the purpose set forth.

In testimony whcreof I have signed my name to this specification, in the presence of two subscribing witnesses, on this 21st, day of July, A. D. 1897.

PRESTON BROOKS BAGLEY.

Vvlitnesses:

ALBAN ANDRJ'JN, THEKLA ANDREN. 

